Terraform: how to to Set Up AWS Elastic Beanstalk with RDS and Load Balancer Integration
I'm working through a tutorial and I'm maintaining legacy code that I'm trying to set up an AWS Elastic Beanstalk application with a PostgreSQL RDS instance and an Application Load Balancer (ALB) using Terraform. However, I'm working with a question where the Elastic Beanstalk environment keeps failing to launch. The behavior message I'm receiving in the AWS console states: "The environment is in a failed state. Check the Elastic Beanstalk Health Dashboard for details." I've created the following resource definitions in my Terraform configuration: ```hcl resource "aws_db_instance" "my_db" { allocated_storage = 20 engine = "postgres" engine_version = "13.3" instance_class = "db.t3.micro" name = "mydb" username = var.db_username password = var.db_password db_subnet_group_name = aws_db_subnet_group.my_db_subnet_group.name vpc_security_group_ids = [aws_security_group.my_db_sg.id] skip_final_snapshot = true } resource "aws_elastic_beanstalk_application" "my_app" { name = "my-application" description = "My Terraform-managed application" } resource "aws_elastic_beanstalk_environment" "my_env" { name = "my-env" application = aws_elastic_beanstalk_application.my_app.name solution_stack_name = "64bit Amazon Linux 2 v5.4.0 running Python 3.8" settings = [ { namespace = "aws:elasticbeanstalk:environment" option_name = "LoadBalancerType" value = "application" }, { namespace = "aws:elasticbeanstalk:application:environment" option_name = "DATABASE_URL" value = "postgres://${var.db_username}:${var.db_password}@${aws_db_instance.my_db.address}:5432/mydb" } ] } ``` I've tried adding some additional logging and increased the timeout for the environment to 30 minutes, but that hasn't helped. I also verified that the security groups allow incoming traffic on the PostgreSQL port (5432). The security group for the RDS instance is allowing access only from the Elastic Beanstalk instances. My Terraform version is 1.1.0, and I am using the AWS provider version 3.42.0. I would really appreciate any insights on what might be going wrong or how to debug this scenario further. Any help would be greatly beneficial. Thanks in advance! I'm open to any suggestions.